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Remote Replication Feature Guide for File 04

OceanStor 5300 V3, 5500 V3, 5600 V3, 5800 V3, and 6800 V3 Storage System V300R002

"This document describes the file system remote replication feature, in terms of the implementation principle,application scenario, and explains how to configure and manage this feature."
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Viewing Remote Replication Information

Viewing Remote Replication Information

This operation enables you to view information about existing remote replications, including basic information and pair information, so that you can effectively monitor the status of remote replications.

Context

  • On the remote replication management page, you can click Refresh to refresh remote replication information.
  • On the remote replication management page, you can click Keyword and enter keywords to search for the desired remote replication information.
  • On the remote replication management page, you can click and select the information items you want to view.

Procedure

  1. Go to the remote replication management page.
    1. On the right navigation bar, click .

      The data protection page is displayed.

    2. In the left function pane, click Remote Replication.

      The remote replication management page is displayed.

  2. View basic information about an existing remote replication. Table 3-9 describes related parameters.

    Table 3-9  Remote replication parameters

    Parameter

    Description

    Value

    Local Resource Name

    Name of a local resource.

    None

    Local Resource ID

    ID of a local resource.

    None

    Remote Resource Name

    Name of a remote resource.

    None

    Remote Resource ID

    ID of a remote resource.

    None

    Remote Device Name

    Name of a remote device.

    [Example]

    testname01

    Remote Device SN

    SN of a remote device.

    [Example]

    210235G6LLZ0B8000005

    Pair ID

    ID of a remote replication pair.

    [Example]

    0

    Role

    Role of the current device in a remote replication pair.

    [Example]

    Primary

    Pair Health Status

    Indicates whether the remote replication pair is normal. The values include Normal and Fault.

    [Example]

    Normal

    Pair Running Status

    Indicates whether the remote replication pair is running properly. The value can be Normal, Synchronizing, Split, To be recovered, Interrupted, or Invalid.

    [Example]

    Normal

    Replication Mode

    Asynchronous mode

    For asynchronous remote replication, when the master resource is executing a write request, the primary site records the written data block. After the master resource sends a write success response, the storage system returns a write success response to the host. Then the changed data recorded by the primary site is synchronized to the secondary site based on the synchronization policy, minimizing the write latency for foreground applications.

    [Example]

    Asynchronous

    Recovery Policy

    A recovery policy supports the following recovery modes:
    • Manual: The remote replication pair enters the To be recovered state. Remote replication must manually synchronize the data from the primary resources to the secondary resources.
    • Automatic: The remote replication pair enters the Synchronizing state. The system will automatically synchronize the incremental data from the primary resources to the secondary resources in the remote replication.

    [Example]

    Automatic

    Primary Resource Data Status

    Status of data on the primary resources.

    [Example]

    Consistent

    Secondary Resource Data Status

    Status of the secondary resource. The data status between the primary resource and secondary resource includes:

    • Consistent: Data is consistent between the primary resource and secondary resource.
    • Inconsistent: Data is inconsistent between the primary resource and secondary resource.

    [Example]

    Consistent

  3. Click the remote replication that you want to check and view information about the remote replication pair. Table 3-10 lists the parameters.

    Table 3-10  Parameters of a remote replication pair

    Parameter

    Description

    Value

    Local Device

    Name of a local device.

    None

    Primary Resource

    Name of the primary resource.

    None

    Secondary Resource

    Name of the secondary resource.

    None

    Remote Device

    Name of a remote device.

    None

    Synchronization Method

    Method to synchronize data from the primary resource to the secondary resource. The values include:
    • Manual: The synchronization operation must be carried out manually.
    • Timed wait when synchronization begins: The system starts timing as soon as the latest synchronization begins. When the time specified in Interval has elapsed, the system starts to synchronize data again.
    • Timed wait when synchronization ends: The system starts timing as soon as the latest synchronization ends. When the time specified in Interval has elapsed, the system starts to synchronize data again.
    • Specify the time policy: The system automatically synchronizes data between the primary file system and secondary file system based on a specified time policy.

    [Example]

    Manual

    Time Policy

    Specify the time policy: Synchronize the primary and secondary resource based on the time policy.

    • Hourly: Specifies when data synchronization begins in every hour. Its value is an integer ranging from 0 to 59.
    • Daily: Specifies when data synchronization begins in every day. Its value ranges from 00:00 to 23:59.
    • Weekly: Specifies when data synchronization begins in every week. Its value ranges from Monday to Sunday and 00:00 to 23:59.

    [Note]

    This parameter is available only when Synchronization Method is set to Specify the time policy.

    Interval

    Set the synchronization interval for the two synchronization methods of Timed wait when synchronization begins and Timed wait when synchronization ends.

    [Note]

    This parameter is available only when Replication Mode is set to Asynchronous, and Synchronization Method is set to Timed wait when synchronization begins or Timed wait when synchronization ends.

    [Value range]

    An integer ranging from 5 to 1440 (inclusive), when minutes is used as the unit.

    [Example]

    80

    Speed

    Rate of data synchronization between the primary resource and secondary resource. The value can be Low, Medium, High, or Highest.

    [Example]

    High

    Start Time

    Time when a remote replication task is started.

    [Format]

    YYYY-MM-DD hh:mm:ss UTC+hh:mm

    [Example]

    2015-08-15 16:51:32 UTC+08:00

    End Time

    Time when a remote replication task is complete.

    [Format]

    YYYY-MM-DD hh:mm:ss UTC+hh:mm

    [Example]

    2015-08-15 20:51:32 UTC+08:00

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Updated: 2019-01-02

Document ID: EDOC1000069276

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